Exciton photoluminescence, photoconductivity and absorption in GaSe0.9Te0.1 alloy crystals
Yazarlar (6)
G. M. Mamedov
Kafkas Üniversitesi, Türkiye
M. Karabulut
Kafkas Üniversitesi, Türkiye
Prof. Dr. Hüseyin ERTAP
Kafkas Üniversitesi, Türkiye
O. Kodolbaş
Hacettepe Üniversitesi, Türkiye
Ö Öktü
Hacettepe Üniversitesi, Türkiye
A. Bacioǧlu
Hacettepe Üniversitesi, Türkiye
| Makale Türü | Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale) | ||
| Dergi Adı | Journal of Luminescence (Q2) | ||
| Dergi ISSN | 0022-2313 Wos Dergi Scopus Dergi | ||
| Dergi Tarandığı Indeksler | SCI-Expanded | ||
| Makale Dili | İngilizce | Basım Tarihi | 03-2009 |
| Cilt / Sayı / Sayfa | 129 / 3 / 226–230 | DOI | 10.1016/j.jlumin.2008.09.015 |
| Makale Linki | http://dx.doi.org/10.1016/j.jlumin.2008.09.015 | ||
| Özet |
| The photoluminescence, photoconductivity and absorption in GaSe0.9Te0.1 alloy crystals have been investigated as a function of temperature and external electric field. It has been observed that the exciton peaks shift to lower energy in GaSe0.9Te0.1 alloy crystals compared to GaSe crystals. The long wavelength tails of interband photoluminescence, photoconductivity and absorption spectra are determined by the free exciton states and show an Urbach-Martienssen-type dependence to the photon energy. The maxima of the extrinsic photoluminescence and photoconductivity spectra were found to be determined by the acceptor centers with an energy of EA=EV+0.19 eV formed by the polytypism and defects complexes that include Se and Te anions. © 2008 Elsevier B.V. All rights reserved. |
| Anahtar Kelimeler |
| GaSeTe | Exciton | Photoluminescence | Photoconductivity | Absorption | Bridgmann |